# flag = False
# #死循环  可能会卡死电脑  用ctrl+c跳出
# while flag:
#     print(f"flag = {flag}")
# print("end")

prompt = "\nTell me something, and I will repeat it back:"
prompt += "\nEnter 'quit' to end the program. \n"
message = ""
while message != 'quit':
    message = input(prompt)
    print(message)
print("end program")

